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Twin turbo: One or Two WG

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Old Mar 4, 2008 | 01:07 AM
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Default Twin turbo: One or Two WG

I am having a hard time deciding whether to go with one or two wastegates and which to aim for. I have 2 GT35r turbo's and my power goals are ultimately from 800-1000hp but at first i will start of with about 600-700hp.

As i see it there are pro's and con's on both. If i go with 2 it will be more expensive to buy, and maybe harder to adjust 2, to be equal. If i buy one, it might be cheaper? But then i need to run pipes from both sides to mate into one WG.

What are your suggestions for going with one or two? And any brand/model that i should go for?
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Old Mar 4, 2008 | 01:29 AM
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I have two tial wastegates on my twin turbo setup.
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Old Mar 4, 2008 | 01:45 AM
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What size are they? And how many PSI are you running?
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Old Mar 4, 2008 | 02:49 PM
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Ya depending on the size of the wastegate I dunno if it will be sufficient enough to bypass enough gas flow for both setups....

Typically whenever I see twin turbos I see people running two wastegates. Ive got one large turbo but two waste gates so I guess its preference.
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Old Mar 4, 2008 | 02:58 PM
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Default wastegates

-that kind of power output should be running 2 wastegates
-as far as adjusting them goes, if you are using the same spring in each of them and split the boost reference line so 1 line feeds both wastegates then tuning WILL NOT be a problem
-brand ? - i use 2 turbonetic racegates on my twin turbo in my dune buggy and they work EXCELLENT
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Old Mar 4, 2008 | 03:57 PM
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It would be a very awkward piping situation to run one gate for twin turbos. Not only that, but running 8-12psi on a 35R (600-700hp) you will need fairly good control over the exhuast gasses.

If it were me, I would run twin Tial 44s or twin Turbosmart 48s...The Tial 44s are much easier to package into a small spot then the Turbosmarts.

Like LS1W said, keeping them in check is not a big deal at all.
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Old Mar 5, 2008 | 12:33 AM
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Thanks alot for your reply's. I guess i will go for 2 then. Just need to set my mind on a model then.

And thanks for the advice about running the boost reference line to the two WG's.
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Old Mar 5, 2008 | 12:50 AM
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i'm using 2 38mm tial
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Old Mar 5, 2008 | 01:14 AM
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i say two
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Old Mar 5, 2008 | 01:28 AM
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you need two
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Old Mar 5, 2008 | 01:52 AM
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Twin Turbosmart or Tial 38mms would be perfect.

GT35r Car -


and

Another GT35r Car -


-Wade
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Old Mar 5, 2008 | 08:16 AM
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You can never have to much wastegate, go with two
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